Is this normal? 15" 2.2 2011 glossy. Ive had it since release and did not notice until now but i am noticing a significant amount of vibration noise coming from my right speaker when listening to any type of audio. It is really noticeable when someone is talking and little background noise is in the audio. example: http://www.youtube.com/watch?v=l4w3o80Vlj0&feature=fvwrel it happens alot during that video! and others to! Is this normal or should i make the trip to apple?